I've got both the showtime and the harrier. I still have fun with the harrier. The harrier has a saito 91 and the showtime a Saito 100. The harrier is still alot of fun and has great stability in high alpha mode. The showtime absolutly blows the harrier away in flat spins torque rolling and KE (and I havent started playing with the sfg's yet). The YS 110 would be a great choice to add power for the oops factor